Fix test_emsize under windows. NFC

Split out from #24437

Author: sbc100

.gitattributes

@@ -3,7 +3,7 @@
 tools/crunch-worker.js -diff
 third_party/lzma.js/lzma-decoder.js -diff
 third_party/lzma.js/lzma-full.js -diff
-test/other/test_emsize.js -diff
+test/other/test_emsize.js -diff eol=lf
 test/* linguist-vendored
 third_party/* linguist-vendored
 system/ linguist-vendored

test/test_other.py

@@ -825,7 +825,7 @@ def test_em_config_filename(self):
     self.assertContained('LLVM', proc.stdout)
     self.assertContained('filename myconfig.py', proc.stdout)
 
-  @no_windows('This test depends on Linux line endings')
+  @crossplatform
   def test_emsize(self):
     # test binaryen generated by running:
     #   emcc test/hello_world.c -Oz --closure 1 -o test/other/test_emsize.js